Friday - November 18, 2016

WTP final structural concrete pour scheduled for next week

The large red crane.

Crews forming and pouring concrete for the suspended slabs for the ozone contactor basin

Water Treatment Plant Construction Update

We’ve reached some significant milestones with construction at the plant over the years, and as work progresses through the final phase, we are about to reach a few more. Next week, the last major structural concrete pour is expected take place on site for the ozone contactor basin! This marks more than 18,000 cubic yards of concrete poured for new structures at the site.

With the end of major structural pours, it is now time to say good bye to the red tower crane! In early December, it will be leaving the site and the West Linn skyline. Since spring 2014, it has provided efficient, quiet and fume-free servicing for construction of new structures across the plant site.

Information about onsite work is outlined below. Please note, schedules are subject to change.

Red tower crane bids farewell

During the week of November 28, a large mobile crane is expected to arrive on site. This will be used to take down the red tower crane, one section at a time. Several flatbed trucks will be traveling to and from the site to remove sections of the crane. At this stage, trucks plan to enter the site on Mapleton Drive and exit on Kenthorpe Way. Please watch for an increase in truck traffic during this week. Crane removal is expected to take a few days to complete.

Ozone system – northeast of site

Crews have been actively forming and pouring concrete for the suspended slabs for the ozone contactor basin. Weather permitting, the final major structural concrete pour is scheduled to take place early next week!

Concrete mason walls are now complete for the ozone generator building, and crews have been working on the structural steel framing and roof. Next week, crews will begin working on the HVAC system.

Miscellaneous duct bank and piping work is also taking place around the new ozone structures.

During these activities, neighbors close to the site should expect some noise and vibration during work hours.

Site improvements and hardscaping

Hardscaping and site improvements are ongoing across the site. Freestanding stone walls have now been formed on the Mapleton frontage.

Site improvements, stone walls, sidewalks and hardscaping work includes digging and preparing the site, placement of materials, forming, compacting, pouring concrete and saw-cutting stone. During this work, neighbors close to the site should expect an increase in intermittent noise and vibration from equipment.

Neighborhood construction meetings – next meeting December 20

Meetings are held once a month at the Robinwood Station, 3706 Cedaroak Drive, West Linn, on the third Tuesday of the month at 6 p.m. The next neighborhood construction meeting will be held on Tuesday, December 20 at 6 p.m. Please attend to stay up-to-date on construction progress in West Linn and ask the project team questions.

Completion date

Construction at the plant is expected to be complete in spring 2017 – this includes all landscaping and site work. The pedestrian pathway, linking Mapleton Drive to Kenthorpe Way, will be opened after construction is complete.

Holiday work hours

Allowed work hours are 7 a.m. to 7 p.m., Monday to Friday, and 9 a.m. to 5 p.m. on Saturday.

In observance of Thanksgiving, no work will occur between Thursday, November 24 through Sunday, November 27. Crews will return on Monday, November 28.

In observance of Christmas, no work will occur between Saturday, December 24 and Monday, December 26. Crews will return on Tuesday, December 27.

In observance of New Year’s Day, no work will occur between Saturday, December 31 and Monday, January 2. Crews will return on Tuesday, January 3.

Site plan and glossary

Please refer to the site plan for locations of each structure or our glossary of terms for construction and operation of the WTP.

For more information, please contact us or attend a neighborhood construction meeting.